:root{
  --ui-zoom:1;
  --ui-scale:1;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; background:#fff; }
.app-header{
  display:flex; align-items:center; justify-content:space-between;
  padding:10px 14px; border-bottom:1px solid #e5e7eb; background:#fff;
  position:sticky; top:0; z-index:100;
}
.app-header h1{ margin:0; font-size:18px; }
.ver{ margin-left:6px; font-weight:600; color:#6b7280; font-size:12px; }
.actions{ display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.actions button{ padding:6px 10px; }
.actions .danger{ background:#c1121f; color:#fff; border:none; }
.ui-controls{ display:flex; gap:8px; align-items:center; font-size:12px; }
.scale-target{ zoom: var(--ui-zoom); }
@supports not (zoom: 1){
  .scale-target{ transform: scale(var(--ui-scale)); transform-origin: top left; }
}
.section-container{ padding:10px 14px; }
.section-container h2{ margin:0 0 8px 0; font-size:16px; }
.numpad-display{ height:40px; border:1px solid #dfe3e6; display:flex; align-items:center; justify-content:center; font-size:20px; letter-spacing:2px; background:#fff; }
.numpad-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:6px; margin-top:6px; }
.numpad-grid button{ padding:12px; font-size:18px; }
.numpad-key-special{ background:#e9ecef; }
.scroll-list{ max-height:55vh; overflow:auto; border:1px solid #eef1f4; padding:6px; border-radius:6px; background:#fff; }
.list-item{ display:flex; justify-content:space-between; align-items:center; gap:10px; padding:8px; border:1px solid #e9ecef; border-radius:8px; background:#fff; }
.list-item-main{ cursor:pointer; }
.list-item-actions{ display:flex; align-items:center; gap:8px; }
.alert-btn{ width:28px; height:28px; border:1px solid #c1121f; color:#c1121f; background:#fff; border-radius:6px; font-weight:700; }
.alert-btn.on{ background:#c1121f; color:#fff; }
.pitlane-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:10px; }
.lane{ border:1px solid #e9ecef; border-radius:8px; background:#fff; }
.lane-title{ padding:6px 10px; border-bottom:1px solid #e9ecef; font-weight:700; }
.kart-in-lane{ display:flex; justify-content:space-between; align-items:center; padding:8px 10px; border-bottom:1px dashed #f1f3f5; }
.kart-remove-btn{ border:none; background:#f8d7da; color:#842029; padding:6px 8px; border-radius:6px; }
.kart-quality{ padding:2px 6px; border-radius:999px; font-size:12px; margin-left:6px; }
.qualita-sconosciuto{ background:#eceff1; }
.qualita-ottimo{ background:#d1e7dd; }
.qualita-buono{ background:#e2f0d9; }
.qualita-medio{ background:#fff3cd; }
.qualita-lento{ background:#ffe5b4; }
.qualita-problematico{ background:#f8d7da; }
.modal-overlay{ position:fixed; inset:0; background:rgba(0,0,0,.35); display:none; align-items:center; justify-content:center; padding:16px; z-index:1000; }
.modal-overlay.show{ display:flex; }
.modal-overlay.hidden{ display:none; }
.modal-content{ background:#fff; padding:16px; border-radius:10px; width:min(900px, 95vw); max-height:90vh; overflow:auto; }
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.grid-2 textarea, .grid-2 input{ width:100%; }
.csv-row{ display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.setup-actions{ margin-top:12px; display:flex; gap:8px; align-items:center; }
.section-ontrack #on-track-list{ display:grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap:8px; }
@media(min-width:1200px){ .section-ontrack #on-track-list{ grid-template-columns: repeat(2, minmax(360px, 1fr)); } }
@media(min-width:1600px){ .section-ontrack #on-track-list{ grid-template-columns: repeat(3, minmax(360px, 1fr)); } }
.lane-buttons{ display:flex; flex-wrap:wrap; gap:10px; }
.lane-buttons button{ padding:12px 18px; border-radius:999px; font-weight:800; min-width:140px; border:1px solid transparent; }
.section-queue #work-queue-list{ display:grid; gap:14px; }
.work-item{ display:flex; justify-content:space-between; align-items:center; padding:18px 16px; font-size:20px; border-radius:12px; background:#f8fafc; border:2px solid #cbd5e1; }
.work-item-remove{ padding:10px 12px; font-size:16px; border-radius:8px; background:#fee2e2; color:#991b1b; border:1px solid #fecaca; }
.welcome-content{ border:1px dashed #cbd5e1; background:#f8fafc; border-radius:8px; padding:14px; }